CN114087413A - Proportional valve regulating method, device, equipment and medium - Google Patents
Proportional valve regulating method, device, equipment and medium Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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Abstract
The application relates to a proportional valve adjusting method, a proportional valve adjusting device, computer equipment and a storage medium. The method comprises the following steps: acquiring a threshold value of a valve opening deviation value of a steam inlet regulating valve for triggering the trip of the steam turbine, wherein the valve opening deviation value of the steam inlet regulating valve represents a deviation value of a command voltage signal of the valve opening of the steam inlet regulating valve and a feedback voltage signal of the valve opening of the steam inlet regulating valve; determining a step quantity of a calibration step response test according to a threshold value, controlling the steam inlet regulating valve to execute the calibration step response test based on the step quantity, and judging whether the steam inlet regulating valve has an overshoot phenomenon when the door is closed; adjusting the negative dead zone compensation parameter of the proportional valve until the steam inlet adjusting valve is at a critical point of the occurrence of the overshoot phenomenon when being closed; taking the current negative dead zone compensation parameter as a target negative dead zone compensation parameter; the proportional valve is adjusted based on a target negative dead-zone compensation parameter. By adopting the method, the problem that the valve body is sensitive to command response and easy to cause mechanical damage to the valve body can be avoided.
Description
Technical Field
The application relates to the technical field of steam turbines, in particular to a method, a device, equipment and a medium for adjusting a proportional valve.
Background
The control system of the steam turbine regulating valve comprises a valve control card and a proportional valve, and an inherent mechanical overlapping area exists inside the proportional valve.
In order to overcome the mechanical overlap region in the proportional valve so that the regulator valve can respond normally to the valve control command, the proportional valve negative dead-band compensation parameter needs to be adjusted properly by the valve control card to completely compensate for the inherent mechanical dead-band inside the corresponding proportional valve.
However, when the dead zone is completely compensated, the valve is sensitive in action, and a small command change is an action, so that the valve body has obvious vibration after receiving a closing command, and the valve body is easy to be damaged mechanically after long-term operation.
Disclosure of Invention
In view of the foregoing, there is a need to provide a proportional valve negative dead-time compensation parameter determining method, apparatus, computer device and storage medium capable of obtaining a suitable proportional valve negative dead-time compensation parameter.
A method of proportional valve adjustment, the method comprising:
acquiring a threshold value of a deviation value of the valve opening degree of a steam inlet regulating valve for triggering the trip of the steam turbine, wherein the deviation value of the valve opening degree of the steam inlet regulating valve represents a deviation value of a command voltage signal of the valve opening degree of the steam inlet regulating valve and a feedback voltage signal of the valve opening degree of the steam inlet regulating valve;
determining a step quantity of a calibration step response test according to the threshold value, controlling the steam inlet regulating valve to execute the calibration step response test based on the step quantity, and judging whether the steam inlet regulating valve has an overshoot phenomenon when the door is closed;
adjusting a negative dead zone compensation parameter of a proportional valve until the steam inlet regulating valve is at a critical point of the occurrence of the overshoot phenomenon when being closed, wherein the proportional valve is used for controlling the valve opening of the steam inlet regulating valve;
taking the current negative dead zone compensation parameter as a target negative dead zone compensation parameter;
adjusting the proportional valve based on the target negative dead-zone compensation parameter.
In one embodiment, the obtaining a threshold value of a deviation value of a valve opening degree of a steam inlet regulating valve for triggering tripping of a steam turbine includes:
acquiring logic configuration in a steam turbine control system;
and determining conditions for triggering the turbine trip based on the internal logic configuration, and determining a threshold value of the deviation value of the opening degree of the steam inlet regulating valve for triggering the turbine trip according to the conditions.
In one embodiment, determining the step size of the calibration step response test based on the threshold comprises:
determining an allowable range of the step quantity according to the threshold value;
determining the step amount from the allowable range with a preset rule.
In one embodiment, the determining the step amount from the allowable range according to a preset rule includes:
and acquiring a median of the allowable range, and determining the median as the step quantity.
In one embodiment, the adjusting a negative dead-zone compensation parameter of a proportional valve until the regulating valve is at a critical point where the overshoot phenomenon occurs when the regulating valve is closed, and taking a current negative dead-zone compensation parameter as a target negative dead-zone compensation parameter includes:
if the steam inlet regulating valve has an overshoot phenomenon when being closed, reducing the negative dead zone compensation parameter of the proportional valve by a preset value, judging whether the current overshoot is zero, and if the current overshoot is zero, taking the current negative dead zone compensation parameter of the proportional valve as the target negative dead zone compensation parameter; if the dead zone compensation parameter is larger than zero, repeating the process until the target negative dead zone compensation parameter is obtained;
if the steam inlet regulating valve does not have the overshoot phenomenon when the door is closed, increasing a preset value for the negative dead zone compensation parameter of the proportional valve, and judging whether the steam inlet regulating valve has the overshoot phenomenon when the door is closed, if so, taking the current negative dead zone compensation parameter of the proportional valve as the target negative dead zone compensation parameter, and if not, repeating the process until the target negative dead zone compensation parameter is obtained.
In one embodiment, before the controlling the steam inlet regulating valve to perform the calibration step response test, the method further includes:
and adjusting the negative dead zone compensation parameter of the proportional valve to a preset value.
In one embodiment, the method further comprises:
and determining the step quantity of a detection step test according to the threshold value, controlling the steam inlet regulating valve to execute the detection step response test, and obtaining the overshoot of the steam inlet regulating valve when the door is closed.
A proportional valve adjustment device, the device comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring a threshold value of an opening deviation value of a steam inlet regulating valve for triggering the trip of the steam turbine, and the opening deviation value of the steam inlet regulating valve represents a deviation value of an opening instruction voltage signal of the steam inlet regulating valve and an opening feedback voltage signal of the steam inlet regulating valve;
the control module is used for determining a step quantity of a calibration step response test according to the threshold value, controlling the steam inlet regulating valve to execute the calibration step response test based on the step quantity, and judging whether the steam inlet regulating valve has an overshoot phenomenon when being closed;
the first adjusting module is used for adjusting a negative dead zone compensation parameter of a proportional valve until the steam inlet adjusting valve is at a critical point of the overshoot phenomenon when being closed, wherein the proportional valve is used for controlling the valve opening degree of the steam inlet adjusting valve;
the determining module is used for taking the current negative dead zone compensation parameter as a target negative dead zone compensation parameter;
a second adjustment module to adjust a proportional valve based on the target negative dead-zone compensation parameter.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
acquiring a threshold value of a deviation value of the valve opening degree of a steam inlet regulating valve for triggering the trip of the steam turbine, wherein the deviation value of the valve opening degree of the steam inlet regulating valve represents a deviation value of a command voltage signal of the valve opening degree of the steam inlet regulating valve and a feedback voltage signal of the valve opening degree of the steam inlet regulating valve;
determining a step quantity of a calibration step response test according to the threshold value, controlling the steam inlet regulating valve to execute the calibration step response test based on the step quantity, and judging whether the steam inlet regulating valve has an overshoot phenomenon when the door is closed;
adjusting a negative dead zone compensation parameter of a proportional valve until the steam inlet regulating valve is at a critical point of the occurrence of the overshoot phenomenon when being closed, wherein the proportional valve is used for controlling the valve opening of the steam inlet regulating valve;
taking the current negative dead zone compensation parameter as a target negative dead zone compensation parameter;
adjusting the proportional valve based on the target negative dead-zone compensation parameter.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
acquiring a threshold value of a deviation value of the valve opening degree of a steam inlet regulating valve for triggering the trip of the steam turbine, wherein the deviation value of the valve opening degree of the steam inlet regulating valve represents a deviation value of a command voltage signal of the valve opening degree of the steam inlet regulating valve and a feedback voltage signal of the valve opening degree of the steam inlet regulating valve;
determining a step quantity of a calibration step response test according to the threshold value, controlling the steam inlet regulating valve to execute the calibration step response test based on the step quantity, and judging whether the steam inlet regulating valve has an overshoot phenomenon when the door is closed;
adjusting a negative dead zone compensation parameter of a proportional valve until the steam inlet regulating valve is at a critical point of the occurrence of the overshoot phenomenon when being closed, wherein the proportional valve is used for controlling the valve opening of the steam inlet regulating valve;
taking the current negative dead zone compensation parameter as a target negative dead zone compensation parameter;
adjusting the proportional valve based on the target negative dead-zone compensation parameter.
The proportional valve adjusting method, the proportional valve adjusting device, the computer equipment and the storage medium determine the step quantity of the calibration step response test according to the threshold value by acquiring the threshold value of the deviation value of the opening degree of the steam inlet adjusting valve for triggering the trip of the steam turbine, when the inherent mechanical dead zone in the proportional valve is completely compensated, no matter what step quantity step response test is carried out, the valve can timely follow the command change, i.e., the regulating valve will have an overshoot when closed, when the regulating valve is controlled to perform a step response test for that step, and the negative dead zone compensation parameter of the proportional valve is adjusted until the regulating valve is at the critical point of the occurrence of the overshoot phenomenon when the door is closed, the inherent mechanical dead zone in the proportional valve is only partially compensated, thereby relatively fully compensating the dead zone, reducing the sensitivity of the valve action response, avoiding the need for full compensation, the problem of valve body mechanical damage caused by the fact that the valve body is too sensitive to command response; meanwhile, the step quantity of the step response test is determined according to the threshold, and the threshold is related to the condition for triggering the turbine trip, so that the negative dead zone compensation parameter obtained based on the step quantity does not influence the response sensitivity of the regulating valve of the turbine during normal operation, the valve can be ensured to change along with the instruction in time in the transient process of the unit, and the reliability of the operation of the valve is practically improved.
Drawings
FIG. 1 is a schematic flow diagram of a proportional valve adjustment method in one embodiment;
FIG. 2 is a logic diagram illustrating the determination of a valve control loop fault according to one embodiment;
FIG. 3 is a flowchart illustrating the steps of determining a target negative dead-band compensation parameter in one embodiment;
FIG. 4 is a schematic diagram of command and feedback curves for a corresponding step test after calibration is complete, in accordance with an embodiment;
FIG. 5 is a schematic flow chart of a proportional valve adjustment method in another embodiment;
FIG. 6 is a block diagram of a proportional valve adjustment device according to one embodiment;
FIG. 7 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in fig. 1, a proportional valve negative dead-zone compensation parameter determination method is provided, comprising the following steps:
s101: and acquiring a threshold value of a valve opening deviation value of the steam inlet regulating valve for triggering the trip of the steam turbine, wherein the valve opening deviation value of the steam inlet regulating valve represents a deviation value of a valve opening instruction voltage signal of the steam inlet regulating valve and a valve opening feedback voltage signal of the steam inlet regulating valve.
Specifically, the steam turbine control system generates a valve opening command voltage signal according to control requirements on the steam turbine rotating speed and load, and a current signal fed back from a valve position sensor of a field valve is converted to generate a valve opening feedback voltage signal. In application, the valve opening corresponding to the command voltage signal has a deviation from the actual opening after the valve adjustment, and therefore, the valve opening command voltage signal has a deviation from the valve opening feedback voltage signal. When the deviation value of the valve opening instruction voltage signal and the valve opening feedback voltage signal exceeds a certain value and the duration time reaches a preset value, the abnormality of the valve control loop can be judged, and the turbine trip can be triggered. In order to avoid turbine tripping, the determination of the negative dead zone compensation parameter of the proportional valve needs to consider the threshold value of the valve opening deviation value of the steam inlet regulating valve for triggering the turbine tripping.
S102: and determining the step quantity of the calibration step response test according to the threshold value, controlling the steam inlet regulating valve to execute the calibration step response test based on the step quantity, and judging whether the steam inlet regulating valve has an overshoot phenomenon when the door is closed.
Wherein the step amount is an adjustment amount of the valve opening, for example, a step response test of 45% -53% -45%, and the step amount is 8%. If the valve opening feedback voltage signal does not directly stay at the final target value but slightly goes forward and then returns to the final target value during the step test, the steam inlet regulating valve has an overshoot phenomenon when being closed.
Specifically, whether the setting of the negative dead zone compensation parameter is reasonable or not can be verified through a step response test, for example, when the negative dead zone compensation parameter is a complete compensation value, that is, when an inherent mechanical dead zone in the proportional valve can be completely compensated, no matter what step amount of the step response test is performed, the valve can timely follow the instruction change. When the step quantity of the calibration step response test is determined according to the threshold value, the threshold value is related to the condition for triggering the trip of the steam turbine, so that the step response test is carried out based on the step quantity, whether the overshoot phenomenon exists when the steam inlet regulating valve is closed is judged, whether the valve response is sensitive is determined, whether the setting of the negative dead zone compensation parameter is reasonable is further determined, and meanwhile, the adjustment direction of the negative dead zone compensation parameter is conveniently determined based on the test result.
S103: and adjusting the negative dead zone compensation parameter of the proportional valve until the steam inlet regulating valve is at a critical point where an overshoot phenomenon occurs when the steam inlet regulating valve is closed, wherein the proportional valve is used for controlling the valve opening of the steam inlet regulating valve.
Wherein, the critical point that the overshoot phenomenon takes place means that there is not overshoot exactly when the governing valve closes the door.
The proportional valve is arranged on the regulating valve servomotor and used for controlling oil inlet and oil drainage of the servomotor so as to control the valve opening of the steam inlet regulating valve.
For example, as shown in fig. 2, when the deviation between the command voltage signal of the valve opening of the steam inlet regulating valve and the feedback voltage signal of the valve opening of the steam inlet regulating valve exceeds 10% and the duration exceeds 10s, which may cause a failure of the valve control loop and further trigger a trip of the steam turbine, the threshold value of the deviation value of the valve opening is 10%, and the step amount of the calibration step response test determined based on the threshold value is a value less than 10%. When the steam inlet regulating valve executes a calibration step response test and adjusts the negative dead zone compensation parameter of the proportional valve until the steam inlet regulating valve is at a critical point of occurrence of an overshoot phenomenon when being closed, the inherent mechanical dead zone inside the proportional valve is partially compensated, the dead zone is relatively completely compensated, the sensitivity of valve action response is reduced, and the problem that when the complete compensation is carried out, the valve body is sensitive to command response and is prone to mechanical damage of the valve body is solved. And because the step quantity of the calibration step response test is less than 10%, when the 10% step response test is carried out, the overshoot is generated when the steam inlet regulating valve is closed, the valve response is relatively quick at the moment, and under the condition that the negative dead zone compensation parameter is adjusted to be the current negative dead zone compensation parameter, the deviation between the steam inlet regulating valve opening instruction voltage signal and the steam inlet regulating valve opening feedback voltage signal exceeds 10% and the duration time exceeds 10s, so that the turbine trip is avoided.
S104: and taking the current negative dead zone compensation parameter as a target negative dead zone compensation parameter.
The method for determining the negative dead zone compensation parameter of the proportional valve determines the step quantity of a calibration step response test according to the threshold value by acquiring the threshold value of the deviation value of the opening degree of the steam inlet regulating valve for triggering the trip of the steam turbine, when the inherent mechanical dead zone in the proportional valve is completely compensated, no matter what step quantity step response test is carried out, the valve can timely follow the command change, i.e., the regulating valve will have an overshoot when closed, when the regulating valve is controlled to perform a step response test for that step, and the negative dead zone compensation parameter of the proportional valve is adjusted until the regulating valve is at the critical point of the occurrence of the overshoot phenomenon when the door is closed, the inherent mechanical dead zone in the proportional valve is only partially compensated, thereby relatively fully compensating the dead zone, reducing the sensitivity of the valve action response, avoiding the need for full compensation, the problem of valve body mechanical damage caused by the fact that the valve body is too sensitive to command response; meanwhile, the step quantity of the step response test is determined according to the threshold, and the threshold is related to the condition for triggering the turbine trip, so that the negative dead zone compensation parameter obtained based on the step quantity does not influence the response sensitivity of the regulating valve of the turbine during normal operation, the valve can be ensured to change along with the instruction in time in the transient process of the unit, and the reliability of the operation of the valve is practically improved.
In one embodiment, obtaining a threshold value of a deviation value of a valve opening of a steam inlet regulating valve for triggering tripping of a steam turbine comprises:
s1011: and acquiring the logic configuration in the steam turbine control system.
S1012: and determining conditions for triggering the turbine trip based on the internal logic configuration, and determining a threshold value of the deviation value of the opening degree of the steam inlet regulating valve for triggering the turbine trip according to the conditions.
Specifically, the logic configuration in the steam turbine control system is the control logic of the steam turbine, and comprises a condition for judging the fault of the control system, and the fault of the control system can trigger the trip of the steam turbine, so that the condition for triggering the trip of the steam turbine can be determined based on the logic configuration in the control system. And when the deviation value of the valve opening command voltage signal of the steam inlet regulating valve and the valve opening feedback voltage signal of the steam inlet regulating valve is overlarge and the duration is longer, the fault of the control system can be judged, so that the threshold value of the deviation value of the valve opening of the regulating valve can be determined based on the condition of triggering the trip of the steam turbine.
In one embodiment, determining the step size of the calibration step response test based on a threshold comprises:
s1021: the allowable range of the step amount is determined according to the threshold value.
Specifically, when the step quantity of the calibration step response test is closer to the threshold value, when the negative dead zone compensation parameter obtained based on the step quantity is used as the target negative dead zone compensation parameter, and the steam inlet regulating valve performs step adjustment of the corresponding threshold value, the valve response is slow, and the turbine trip may be triggered. The step size of the calibration step response test needs to be different from the threshold. However, if the step quantity of the calibration step response test is too small, the dead zone is relatively completely compensated, the sensitivity of the valve action response is not obviously reduced, and the problem that the valve body is too sensitive to the command response and is easy to cause mechanical damage to the valve body still exists. Therefore, in the present embodiment, the lower limit value of the allowable range of the step amount is a threshold of 0.7, and the upper limit value of the allowable range is a threshold of 0.9. For example, if the threshold is 10%, the allowable range of the step amount is 7% -9%.
S1022: the step amount is determined from the allowable range with a preset rule.
Specifically, after the allowable range of the step quantity of the calibration step response test is determined, the final step quantity needs to be determined from the allowable range, and the step quantity is determined from the allowable range by a preset rule, so that the reasonability of the step quantity of the finally determined calibration step response test is further ensured.
In one embodiment, the step amount is determined from the allowable range by a preset rule, including:
s10221: and acquiring a median of the allowable range, and determining the median as a step quantity.
Specifically, the median of the allowable range is determined by the step quantity of the calibration step response test, so that the step quantity of the calibration step response test is not too small and is not too close to the threshold, and the reasonability of the step quantity of the determined calibration step response test is ensured. Illustratively, when the allowable range of the step size is 7% -9%, the median value of the allowable range is 8%, and the step size of the finally determined calibration step response test is 8%.
In one embodiment, as shown in fig. 3, adjusting the negative dead-zone compensation parameter of the proportional valve until the regulating valve is at a critical point where an overshoot phenomenon occurs when the regulating valve is closed, and using the current negative dead-zone compensation parameter as the target negative dead-zone compensation parameter includes:
s301: if the steam inlet regulating valve has an overshoot phenomenon when being closed, reducing the negative dead zone compensation parameter of the proportional valve by a preset value, judging whether the current overshoot is zero, and if the current overshoot is zero, taking the current negative dead zone compensation parameter of the proportional valve as a target negative dead zone compensation parameter; if the dead zone compensation parameter is larger than zero, the process is repeated until a target negative dead zone compensation parameter is obtained.
Specifically, if the steam inlet regulating valve has an overshoot phenomenon when the door is closed, since the negative dead zone compensation parameter of the proportional valve is used for compensating the mechanical dead zone of the proportional valve, when the negative dead zone compensation parameter is reduced, the sensitivity of the regulating valve is reduced, and the overshoot of the valve is reduced. Therefore, the target negative dead zone compensation parameter can be tested in the manner of S301. For example, when the current target negative dead zone compensation parameter is-2.5V, the preset value is 0.01, and the corresponding negative dead zone compensation parameter is-2.53V when the overshoot is zero when the steam inlet regulating valve is closed, the target negative dead zone compensation parameter can be obtained only by reducing the negative dead zone compensation parameter of the proportional valve by the preset value three times.
S302: if the steam inlet regulating valve does not have the overshoot phenomenon when the door is closed, increasing the preset value of the negative dead zone compensation parameter of the proportional valve, and judging whether the overshoot phenomenon exists when the steam inlet regulating valve is closed, if so, taking the current negative dead zone compensation parameter of the proportional valve as the target negative dead zone compensation parameter, and if not, repeating the process until the target negative dead zone compensation parameter is obtained.
Specifically, if the overshoot phenomenon does not occur when the steam intake regulating valve is closed, it indicates that the current proportional valve negative dead zone compensation parameter is smaller than the target negative dead zone compensation parameter, and therefore, the preset value needs to be gradually increased until the overshoot phenomenon occurs when the steam intake regulating valve is closed, and the current proportional valve negative dead zone compensation parameter corresponds to a critical point where the overshoot phenomenon occurs in the steam intake regulating valve, so that the current proportional valve negative dead zone compensation parameter can be directly used as the target negative dead zone compensation parameter.
In one embodiment, before controlling the steam inlet regulating valve to perform the calibration step response test, the method further comprises the following steps:
and adjusting the negative dead zone compensation parameter of the proportional valve to a preset value.
Specifically, the range of the target proportional valve negative dead-time compensation parameter may be predetermined, and the proportional valve negative dead-time compensation parameter is adjusted to a certain value within the range in advance based on the range, so that the adjustment times of the proportional valve negative dead-time compensation parameter is reduced, and the target proportional valve negative dead-time compensation parameter is conveniently and quickly determined.
In one embodiment, the method further comprises:
and determining the step quantity of the detection step test according to the threshold value, controlling the steam inlet regulating valve to execute the detection step response test, and obtaining the overshoot of the steam inlet regulating valve when the door is closed.
Specifically, the step amount of the detection step test is the same as the threshold value. For example, when the deviation between the valve opening command voltage signal of the steam inlet regulating valve and the valve opening feedback voltage signal of the steam inlet regulating valve exceeds 10% and the duration exceeds 10s, the turbine trip is triggered, the threshold value of the valve opening deviation value is 10%, and the step quantity of the detection step test is 10%. The detection step response test is executed by controlling the steam inlet regulating valve, the overshoot of the steam inlet regulating valve when the door is closed is obtained, the obtained overshoot is recorded, and the value of the relevant preset value can be adjusted when the proportional valve is adjusted again based on the recorded overshoot, for example, the step of the calibration step response test is carried out. Illustratively, as shown in fig. 4, when the step quantity of the calibration step test is 8%, the steam inlet regulating valve is controlled to perform a detection step test of 45% -55% -45%, and the steam inlet regulating valve has an overshoot when being closed.
In one embodiment, a method for adjusting a proportional valve is provided, which, based on the above embodiment, as shown in fig. 5, includes:
s501: adjusting the negative dead zone compensation parameter of the proportional valve to a preset value;
s502: acquiring logic configuration in a steam turbine control system;
s503: determining conditions for triggering the turbine trip based on the internal logic configuration, and determining a threshold value of a deviation value of the opening degree of a steam inlet regulating valve for triggering the turbine trip according to the conditions;
s504: determining an allowable range of the step quantity according to a threshold, acquiring a median value of the allowable range, and determining the median value as the step quantity;
s505: controlling the steam inlet regulating valve to execute a calibration step response test based on the step quantity, and judging whether the steam inlet regulating valve has an overshoot phenomenon when the door is closed;
s506: if so, reducing the negative dead zone compensation parameter of the proportional valve by a preset value, judging whether the current overshoot is zero, and if so, taking the current negative dead zone compensation parameter of the proportional valve as a target negative dead zone compensation parameter; if the dead zone compensation parameter is larger than zero, repeating the process until a target negative dead zone compensation parameter is obtained;
s507: if not, increasing the negative dead zone compensation parameter of the proportional valve by a preset value, and judging whether an overshoot phenomenon exists when the steam inlet regulating valve is closed, if so, taking the current negative dead zone compensation parameter of the proportional valve as a target negative dead zone compensation parameter, otherwise, repeating the process until the target negative dead zone compensation parameter is obtained;
s508: the proportional valve is adjusted based on a target negative dead-zone compensation parameter.
It should be understood that although the steps in the flowcharts of fig. 1, 3 and 5 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1, 3 and 5 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 6, there is provided a proportional valve adjusting apparatus 600, which may be a part of a computer device using a software module or a hardware module, or a combination of the two, and specifically includes: an obtaining module 601, a determining module 602, a first adjusting module 603, a determining module 604, and a second adjusting module 605, wherein:
the acquiring module 601 is configured to acquire a threshold of a deviation value of a valve opening of a steam inlet regulating valve for triggering a trip of a steam turbine, where the deviation value of the valve opening of the steam inlet regulating valve represents a deviation value of a command voltage signal of the valve opening of the steam inlet regulating valve and a feedback voltage signal of the valve opening of the steam inlet regulating valve;
the control module 602 is configured to determine a step quantity of a calibration step response test according to a threshold, control the steam intake regulating valve to execute the calibration step response test based on the step quantity, and determine whether an overshoot phenomenon occurs when the steam intake regulating valve is closed;
the first adjusting module 603 is configured to adjust a negative dead zone compensation parameter of the proportional valve until the regulating valve is at a critical point where an overshoot phenomenon occurs when the regulating valve is closed, where the proportional valve is configured to control a valve opening of the regulating valve;
a determining module 604, configured to use the current negative dead-zone compensation parameter as a target negative dead-zone compensation parameter;
a second adjustment module 605 is used to adjust the proportional valve based on the target negative dead band compensation parameter.
In one embodiment, the obtaining module 601 includes: the system comprises an acquisition unit and a first determination unit, wherein the acquisition unit is used for acquiring the logic configuration in the steam turbine control system; the determining unit is used for determining conditions for triggering the turbine trip based on the internal logic configuration and determining a threshold value of a deviation value of the opening degree of a valve of a steam inlet regulating valve for triggering the turbine trip according to the conditions.
In one embodiment, the per-control module 602 includes: the second determining unit is used for determining the allowable range of the step quantity according to the threshold value; the third determination unit is configured to determine the step amount from the allowable range with a preset rule.
In one embodiment, the third determining unit is further configured to obtain a median of the allowable range, and determine the median as the step amount.
In one embodiment, the first adjustment module 603 comprises: the determining module 604 comprises a first judging unit and a second judging unit, and the first regulating unit is used for reducing the negative dead zone compensation parameter of the proportional valve by a preset value when the steam inlet regulating valve has an overshoot phenomenon when being closed and judging whether the current overshoot is zero or not; the first judgment unit is used for acquiring the current overshoot obtained by the first regulation unit, and taking the negative dead-zone compensation parameter of the current proportional valve as a target negative dead-zone compensation parameter when the current overshoot is zero; the second adjusting unit is used for increasing the negative dead zone compensation parameter of the proportional valve by a preset value when the steam inlet adjusting valve does not have the overshoot phenomenon when the door is closed, and judging whether the overshoot phenomenon exists when the steam inlet adjusting valve is closed; the second judging unit is used for obtaining a judging result of the second adjusting unit and taking the current proportional valve negative dead zone compensation parameter as a target negative dead zone compensation parameter when the steam inlet adjusting valve is closed and has an overshoot phenomenon.
In one embodiment, the proportional valve adjusting device 600 further comprises: and the presetting module is used for adjusting the negative dead zone compensation parameter of the proportional valve to a preset value before controlling the steam inlet regulating valve to execute the calibration step response test.
In one embodiment, the proportional valve adjusting device 600 further comprises: and the detection module is used for determining the step quantity of the detection step test according to the threshold value, controlling the steam inlet regulating valve to execute the detection step response test and acquiring the overshoot of the steam inlet regulating valve when the door is closed.
For specific limitations of the proportional valve adjusting device 600, reference may be made to the above limitations of the proportional valve adjusting method, which are not described herein again. The various modules in the proportional valve adjusting device 600 described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 7. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a proportional valve adjustment method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 7 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, there is also provided a computer device comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the following steps when executing the computer program:
acquiring a threshold value of a valve opening deviation value of a steam inlet regulating valve for triggering the trip of the steam turbine, wherein the valve opening deviation value of the steam inlet regulating valve represents a deviation value of a command voltage signal of the valve opening of the steam inlet regulating valve and a feedback voltage signal of the valve opening of the steam inlet regulating valve;
determining a step quantity of a calibration step response test according to a threshold value, controlling the steam inlet regulating valve to execute the calibration step response test based on the step quantity, and judging whether the steam inlet regulating valve has an overshoot phenomenon when the door is closed;
adjusting a negative dead zone compensation parameter of a proportional valve until the steam inlet regulating valve is at a critical point of an overshoot phenomenon when being closed, wherein the proportional valve is used for controlling the valve opening of the steam inlet regulating valve;
taking the current negative dead zone compensation parameter as a target negative dead zone compensation parameter;
the proportional valve is adjusted based on a target negative dead-zone compensation parameter.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
acquiring logic configuration in a steam turbine control system; and determining conditions for triggering the turbine trip based on the internal logic configuration, and determining a threshold value of the deviation value of the opening degree of the steam inlet regulating valve for triggering the turbine trip according to the conditions.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
determining an allowable range of the step quantity according to a threshold value; the step amount is determined from the allowable range with a preset rule.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and acquiring a median of the allowable range, and determining the median as a step quantity.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
if the steam inlet regulating valve has an overshoot phenomenon when being closed, reducing the negative dead zone compensation parameter of the proportional valve by a preset value, judging whether the current overshoot is zero, and if the current overshoot is zero, taking the current negative dead zone compensation parameter of the proportional valve as a target negative dead zone compensation parameter; if the dead zone compensation parameter is larger than zero, repeating the process until a target negative dead zone compensation parameter is obtained; if the steam inlet regulating valve does not have the overshoot phenomenon when the door is closed, increasing the preset value of the negative dead zone compensation parameter of the proportional valve, and judging whether the overshoot phenomenon exists when the steam inlet regulating valve is closed, if so, taking the current negative dead zone compensation parameter of the proportional valve as the target negative dead zone compensation parameter, and if not, repeating the process until the target negative dead zone compensation parameter is obtained.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and adjusting the negative dead zone compensation parameter of the proportional valve to a preset value.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and determining the step quantity of the detection step test according to the threshold value, controlling the steam inlet regulating valve to execute the detection step response test, and obtaining the overshoot of the steam inlet regulating valve when the door is closed.
In one embodiment, a computer-readable storage medium is provided, storing a computer program that, when executed by a processor, performs the steps of:
acquiring a threshold value of a valve opening deviation value of a steam inlet regulating valve for triggering the trip of the steam turbine, wherein the valve opening deviation value of the steam inlet regulating valve represents a deviation value of a command voltage signal of the valve opening of the steam inlet regulating valve and a feedback voltage signal of the valve opening of the steam inlet regulating valve;
determining a step quantity of a calibration step response test according to a threshold value, controlling the steam inlet regulating valve to execute the calibration step response test based on the step quantity, and judging whether the steam inlet regulating valve has an overshoot phenomenon when the door is closed;
adjusting a negative dead zone compensation parameter of a proportional valve until the steam inlet regulating valve is at a critical point of an overshoot phenomenon when being closed, wherein the proportional valve is used for controlling the valve opening of the steam inlet regulating valve;
taking the current negative dead zone compensation parameter as a target negative dead zone compensation parameter;
the proportional valve is adjusted based on a target negative dead-zone compensation parameter.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring logic configuration in a steam turbine control system; and determining conditions for triggering the turbine trip based on the internal logic configuration, and determining a threshold value of the deviation value of the opening degree of the steam inlet regulating valve for triggering the turbine trip according to the conditions.
In one embodiment, the computer program when executed by the processor further performs the steps of:
determining an allowable range of the step quantity according to a threshold value; the step amount is determined from the allowable range with a preset rule.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and acquiring a median of the allowable range, and determining the median as a step quantity.
In one embodiment, the computer program when executed by the processor further performs the steps of:
if the steam inlet regulating valve has an overshoot phenomenon when being closed, reducing the negative dead zone compensation parameter of the proportional valve by a preset value, judging whether the current overshoot is zero, and if the current overshoot is zero, taking the current negative dead zone compensation parameter of the proportional valve as a target negative dead zone compensation parameter; if the dead zone compensation parameter is larger than zero, repeating the process until a target negative dead zone compensation parameter is obtained; if the steam inlet regulating valve does not have the overshoot phenomenon when the door is closed, increasing the preset value of the negative dead zone compensation parameter of the proportional valve, and judging whether the overshoot phenomenon exists when the steam inlet regulating valve is closed, if so, taking the current negative dead zone compensation parameter of the proportional valve as the target negative dead zone compensation parameter, and if not, repeating the process until the target negative dead zone compensation parameter is obtained.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and adjusting the negative dead zone compensation parameter of the proportional valve to a preset value.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and determining the step quantity of the detection step test according to the threshold value, controlling the steam inlet regulating valve to execute the detection step response test, and obtaining the overshoot of the steam inlet regulating valve when the door is closed.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of regulating a proportional valve, the method comprising:
acquiring a threshold value of a deviation value of the valve opening degree of a steam inlet regulating valve for triggering the trip of the steam turbine, wherein the deviation value of the valve opening degree of the steam inlet regulating valve represents a deviation value of a command voltage signal of the valve opening degree of the steam inlet regulating valve and a feedback voltage signal of the valve opening degree of the steam inlet regulating valve;
determining a step quantity of a calibration step response test according to the threshold value, controlling the steam inlet regulating valve to execute the calibration step response test based on the step quantity, and judging whether the steam inlet regulating valve has an overshoot phenomenon when the door is closed;
adjusting a negative dead zone compensation parameter of a proportional valve until the steam inlet regulating valve is at a critical point of the occurrence of the overshoot phenomenon when being closed, wherein the proportional valve is used for controlling the valve opening of the steam inlet regulating valve;
taking the current negative dead zone compensation parameter as a target negative dead zone compensation parameter;
adjusting the proportional valve based on the target negative dead-zone compensation parameter.
2. The proportional valve regulating method of claim 1, wherein the obtaining of the threshold value of the deviation value of the valve opening of the steam inlet regulating valve for triggering tripping of the steam turbine comprises:
acquiring logic configuration in a steam turbine control system;
and determining conditions for triggering the turbine trip based on the internal logic configuration, and determining a threshold value of the deviation value of the opening degree of the steam inlet regulating valve for triggering the turbine trip according to the conditions.
3. The proportional valve adjustment method of claim 1, wherein said determining a step amount for a calibration step response test based on said threshold comprises:
determining an allowable range of the step quantity according to the threshold value;
determining the step amount from the allowable range with a preset rule.
4. The proportional valve adjustment method of claim 3, wherein said determining the step amount from within the allowable range with a preset rule comprises:
and acquiring a median of the allowable range, and determining the median as the step quantity.
5. The proportional valve adjusting method of claim 1, wherein the adjusting of the negative dead-zone compensation parameter of the proportional valve until the adjusting valve is at a critical point of the overshoot phenomenon when the adjusting valve is closed, and taking a current negative dead-zone compensation parameter as a target negative dead-zone compensation parameter comprises:
if the steam inlet regulating valve has an overshoot phenomenon when being closed, reducing the negative dead zone compensation parameter of the proportional valve by a preset value, judging whether the current overshoot is zero, and if the current overshoot is zero, taking the current negative dead zone compensation parameter of the proportional valve as the target negative dead zone compensation parameter; if the dead zone compensation parameter is larger than zero, repeating the process until the target negative dead zone compensation parameter is obtained;
if the steam inlet regulating valve does not have the overshoot phenomenon when the door is closed, increasing a preset value for the negative dead zone compensation parameter of the proportional valve, and judging whether the steam inlet regulating valve has the overshoot phenomenon when the door is closed, if so, taking the current negative dead zone compensation parameter of the proportional valve as the target negative dead zone compensation parameter, and if not, repeating the process until the target negative dead zone compensation parameter is obtained.
6. The proportional valve adjustment method of claim 1, wherein before the controlling the admission control valve performs the calibration step response test, further comprising:
and adjusting the negative dead zone compensation parameter of the proportional valve to a preset value.
7. The proportional valve adjustment method of any of claims 1-6, further comprising:
and determining the step quantity of a detection step test according to the threshold value, controlling the steam inlet regulating valve to execute the detection step response test, and obtaining the overshoot of the steam inlet regulating valve when the door is closed.
8. A proportional valve adjustment device, comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring a threshold value of an opening deviation value of a steam inlet regulating valve for triggering the trip of the steam turbine, and the opening deviation value of the steam inlet regulating valve represents a deviation value of an opening instruction voltage signal of the steam inlet regulating valve and an opening feedback voltage signal of the steam inlet regulating valve;
the control module is used for determining a step quantity of a calibration step response test according to the threshold value, controlling the steam inlet regulating valve to execute the calibration step response test based on the step quantity, and judging whether the steam inlet regulating valve has an overshoot phenomenon when being closed;
the first adjusting module is used for adjusting a negative dead zone compensation parameter of a proportional valve until the steam inlet adjusting valve is at a critical point of the overshoot phenomenon when being closed, wherein the proportional valve is used for controlling the valve opening degree of the steam inlet adjusting valve;
the determining module is used for taking the current negative dead zone compensation parameter as a target negative dead zone compensation parameter;
a second adjustment module to adjust a proportional valve based on the target negative dead-zone compensation parameter.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 7.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810227A (en) * | 2022-03-09 | 2022-07-29 | 贵州电网有限责任公司 | Method for measuring steam turbine body parameters based on closed-loop mode |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09171412A (en) * | 1995-12-21 | 1997-06-30 | Konica Corp | Valve controlling method and valve controller |
| JPH10205337A (en) * | 1997-01-21 | 1998-08-04 | Nissan Motor Co Ltd | Swirl control valve controller of internal combustion engine |
| US6036617A (en) * | 1997-11-13 | 2000-03-14 | Nissan Motor Co., Ltd. | Continuously variable transmission, and controller and control method thereof |
| CN102608911A (en) * | 2012-03-14 | 2012-07-25 | 东南大学 | Fossil power plant coordination control method based on multi-parameter prediction |
| CN103696813A (en) * | 2013-12-20 | 2014-04-02 | 中广核核电运营有限公司 | Method for adjusting dead-zone compensation of control fastener of adjusting valve of half-speed turbine of nuclear power plant |
| CN104018894A (en) * | 2014-05-28 | 2014-09-03 | 中广核核电运营有限公司 | Checking processing method of steam turbine electric hydraulic control system pulse impact |
| US20140374634A1 (en) * | 2012-02-03 | 2014-12-25 | Hitachi Metals Ltd. | Flow control apparatus and program |
| CN106555620A (en) * | 2015-09-30 | 2017-04-05 | 大亚湾核电运营管理有限责任公司 | A kind of Steam Turhine Adjustment control valve device and method |
| CN110593966A (en) * | 2019-08-12 | 2019-12-20 | 岭澳核电有限公司 | Method and device for testing dead zone of regulating valve of steam turbine of nuclear power station |
| CN113309582A (en) * | 2021-06-10 | 2021-08-27 | 中国华能集团有限公司南方分公司 | Control method and system model for turbine medium-pressure regulating valve to participate in secondary frequency modulation |
| CN113625547A (en) * | 2021-08-11 | 2021-11-09 | 宁波宇洲液压设备有限公司 | Main valve position control method of controller |
-
2021
- 2021-11-26 CN CN202111421635.5A patent/CN114087413B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09171412A (en) * | 1995-12-21 | 1997-06-30 | Konica Corp | Valve controlling method and valve controller |
| JPH10205337A (en) * | 1997-01-21 | 1998-08-04 | Nissan Motor Co Ltd | Swirl control valve controller of internal combustion engine |
| US6036617A (en) * | 1997-11-13 | 2000-03-14 | Nissan Motor Co., Ltd. | Continuously variable transmission, and controller and control method thereof |
| US20140374634A1 (en) * | 2012-02-03 | 2014-12-25 | Hitachi Metals Ltd. | Flow control apparatus and program |
| CN102608911A (en) * | 2012-03-14 | 2012-07-25 | 东南大学 | Fossil power plant coordination control method based on multi-parameter prediction |
| CN103696813A (en) * | 2013-12-20 | 2014-04-02 | 中广核核电运营有限公司 | Method for adjusting dead-zone compensation of control fastener of adjusting valve of half-speed turbine of nuclear power plant |
| CN104018894A (en) * | 2014-05-28 | 2014-09-03 | 中广核核电运营有限公司 | Checking processing method of steam turbine electric hydraulic control system pulse impact |
| CN106555620A (en) * | 2015-09-30 | 2017-04-05 | 大亚湾核电运营管理有限责任公司 | A kind of Steam Turhine Adjustment control valve device and method |
| CN110593966A (en) * | 2019-08-12 | 2019-12-20 | 岭澳核电有限公司 | Method and device for testing dead zone of regulating valve of steam turbine of nuclear power station |
| CN113309582A (en) * | 2021-06-10 | 2021-08-27 | 中国华能集团有限公司南方分公司 | Control method and system model for turbine medium-pressure regulating valve to participate in secondary frequency modulation |
| CN113625547A (en) * | 2021-08-11 | 2021-11-09 | 宁波宇洲液压设备有限公司 | Main valve position control method of controller |
Non-Patent Citations (2)
| Title |
|---|
| 孙小龙;赵书宇;: "1119MW核电机组半速汽轮机主汽阀和调节阀调整试验", 电力建设, no. 05, pages 69 - 72 * |
| 陈路标;肖付伟;: "核电厂汽轮发电机主调节阀开度限值修改分析", 电工技术, no. 16, pages 45 - 47 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810227A (en) * | 2022-03-09 | 2022-07-29 | 贵州电网有限责任公司 | Method for measuring steam turbine body parameters based on closed-loop mode |
| CN114810227B (en) * | 2022-03-09 | 2023-10-03 | 贵州电网有限责任公司 | Method for measuring turbine body parameters based on closed loop mode |
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|---|---|
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